Hey everyone, I have a 15 gal cube. I have a canister filter and I was hoping to hopefully do something to swap out my filtration. My canister is a zoomed nano and I feel like it is no longer upkeeping as it used to. What would be a better way to filter out and have a cleaner tank? Please include hardware if need be, I have a nano skimmer, ATO that I have not set up yet as I must make space, and I may use it for my newer tank. So maybe more basic ATO would be nice as well,